Oral appliance



FIG. 1 is a top perspective view of an oral appliance showing our newdesign;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is right side view thereof;

FIG. 5 is rear view thereof;

FIG. 6 is bottom view thereof; and,

FIG. 7 is front view thereof.

The broken lines shown in FIGS. 1, 2, 5, and 7 are included for thepurpose of illustrating environmental structure and form no part of theclaimed design.

The ornamental design for an oral appliance, as shown and described.